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Ultrasonic level sensor with WIFI modem and WebApp

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Luis Arcos will help you to find the right product: +49 (0)30 509 308 800

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SKU: EcoFrog


  • Measuring range up to 3m
  • Measures all liquids: heating oil, water, diesel, etc
  • Measures every 6 hours and transfers the data once a day via WiFi to data server
  • Battery life up to 10 years
  • No limitation of the max. measurable tank volume
  • Graphic display of the filling level

Fields of application

  • Proven successful in over 30,000 applications
  • Measures all liquids: heating oil, water, diesel, etc.
  • Suitable for fuel oil tanks, diesel tanks, cellar tanks, underground tanks, reservoirs, storage tanks and ICB drums with a volume of at least 200 litre


EcoFrog from E-Sensorix is a modern level indicator for the fuel oil tanks and monitor the fill level in the fuel oil tanks and consumption via a web portal or on smartphone. EcoFrog is the alternative for thread floats, dipsticks, fuel meters or other mechanical systems and can also be used where it is impossible to connect to the grid. 

The device offers the possibility of individual configurations.For configuring the device suitable to your application, following information's are required:

  1. Medium in the tank e.g. fuel oil, water, etc.
  2. Different tank types: Tank type A for rectangular tanks, B for oval or round tanks, 
    C for flat, horizontal tanks (B>H)


  3. Height (H) in cm, more precisely the distance between tank bottom and sensor outlet (entire measuring range). If the distance between sensor and maximum filling height is > 15cm, please indicate the difference as offset.Height (H) in cm
  4. Width (W) in cm * and length / depth (Z) in cm *
  5. Maximum volume in litres (When used on battery tanks, please add the volume of all tanks.)
  6. Height of the sampling point / suction point in cm. The level at which the contents of the tank are sucked in and is also called "dead zone" or "sludge". Standard according to TÜV in fuel oil tanks is 8cm (standard setting).
  7. Sensor offset (empty area) in cm. In order to achieve optimum measurements, the sensor should be installed 15cm above the maximum filling level. If this distance is larger and there is an empty area, enter it here in cm (e.g. 2cm).

Sensor offset (empty area) in cm

General Information
More Information
Measuring principleNon-contact ultrasonic
Sensor frequencyWiFi standard 2.412 to 2.462GHz
Medium typeLiquids
Measurement level range0.5 to 3 m (10 ft)
Measured value resolution+/- 10 mm
Blocking distance150 mm
Maximum measurement intervalMeasures every 6h and transmits measured values to the data server in 24h intervals
Process temperature range-17 to 50 °C (0 to 122 °F)
Sensor accuracy± 20 mm
Battery3.6V Li-SOCl2, size R14 (C) (or also SaftLSH14)
Battery lifeUp to 10 years
More Information
Communication protocolWireless: 802.11 b/g/n Wi-Fi
ResolutionUltrasonic resolution: ± 1 cm
Mechanical Data
More Information
Installation typeVessel, Tank, Shaft
Installation positionOn top
Process connection2", 1¼" and 1½" (thread)
Housing materialUV stabilized Polypropylene
Degree of protectionIP67
Electrical Data
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Power supply3.6V Li-SOCl2, size R14 (C) (or also SaftLSH14)
Transmitter connection wiringWireless: 802.11 b/g/n Wi-Fi
Additional Information
More Information
Ambient temperature range-17 to 50 °C
Storage temperature20 to 25 °C (68 to 77 °F)
Mounting typeIntegral
Electromagnetic compatibility (EMC)EN 61000-4-2/3
Our expert

Luis Arcos will help you to find the right product: +49 (0)30 509 308 800

Contact Expert
  • 30-day return policy
  • Official reseller
  • Expert engineering support
  • Free delivery in the EU

Questions & Answers

€142.77 plus VAT
Shipping in 8 working days
+ 1 day delivery to Germany
  • 30-day return policy
  • Official reseller
  • Expert engineering support
  • Free delivery in the EU
Product Details